Question

Four Olympic skaters are attempting to win a medal. The skaters success rates for skaters A, B, C and D are: 80%, 83%, 52% and 86% respectively. Find the probability that:

A) Skater A and D are successful, but C and B are not.
B) Skater B and C are successful, but A and D are not.
C) None of the skaters win a medal.
D) At least one of the four skater wins a medal.

Round to four decimal places. Write a decimal such as 0.25 as just .25.

Answer 1

A) P(A and D and not C and not B) = .8 * .86 * (1-.52) * (1-.83)

Answer 2

so a is .056?

Answer 3

yes

Answer 4

wat about b

Answer 5

do you know where the numbers in answer A came from?